Watch: How Musou Orochi begins

Koei has prided itself in using history to inspire the Dynasty Warriors and Samurai Warriors series, but Musou Orochi dips into the fantasy arena. A huge purple vortex links the two time periods and has the warriors from the warring states era and from the Romance of the Three Kingdoms team up to fight Nobunaga. Interesting mash up, but I want to see Gundam Musou versus Musou Orochi.